I’m not sure if the desire for a suitable (if not perfect) three season sleeping bag that can be used Spring, Summer, and Fall is really reasonable or whether I should just resign myself to needing more than one bag for the wide range of conditions that characterizes typical three season use here in NY. Here’s my situation:
I was about to buy a Western Mountaineering Summerlite a few days ago, but I got psyched out. I’ve posted about this before: I’m moving to a lighter bag in large due to a trip to Glacier National Park that I have planned this summer, but also because I want a lighter bag that I can use here in the Adirondacks and Catskills for 3 season use. I’m sort of stuck as to what to do:
1. The Summerlite fits me great and leaves a fair bit of room for supplementing its use with lofty, insulating clothes. Also, I’m sure that, with its 30* rating and full zip that I won’t roast in the heat of July and August.
2. However, the bag lacks the collar and added fill of the Ultralite which, for a few ounces more, would take me down to 20*. I’m sure that the Ultralite would be warmer in the shoulder seasons without being supplemented by clothes, but I wonder if won’t be too warm for summer use.
3. I’ve only just gotten myself set up with a nice ultralight clothing system this winter and, thus, kind of lack experience using it in conjunction with with a sleeping bag. This being the case, I’m not sure how much to prioritize the lighter weight of the Summerlite and Ultralite versus the extra room of the Megalite and the Alinlite.
What do you guys think? Is there a silver bullet solution available to me? Am I overthinking this? Should I just accept that I’ll need multiple bags to maintain good comfortability in the heat of summer and the cold of earl spring/late fall? What are the qualities of an “ideal” three season bag if such a thing exists? If I utilize proper technique layering clothes in the Summerlite (and we assume that I’m well fed and tend to run on the cool side of warm when I sleep), can I expect that it’ll keep me warm in spring and autumn?
Thanks in advance for your opinions,